Pixel unit of display panel, lower substrate of display panel, and display panel

Abstract

The present application discloses a pixel unit of a display panel, a lower substrate of the display panel, and a display panel, which provides a transparent shielding electrode element connected to a common signal line and extending into the opening area, and the orthogonal projection of the transparent shielding electrode element in a plane where the common signal line is located at least partially overlaps the common signal line, thereby extending the shielding effect provided by the common signal line, and thereby reducing the parasitic capacitance between the pixel electrode and the data line.

Description

[Technical field]

[0001] The present application relates to the field of display technology, and in particular to a pixel unit of a display panel, a lower substrate of a display panel, and a display panel. [Background technology]

[0002] With the development of liquid crystal display panel technology, the transmittance of the pixels on the display panel is approaching its limit. Most pixel designs of conventional display panels aim at simplifying the wiring, increasing the area of ​​the aperture region, and further increasing the aperture ratio and improving the transmittance.

[0003] For example, refer to FIG. 1, which is a partial plan view of a pixel unit of a conventional liquid crystal display panel. The pixel unit includes a data line DL' and a scan line SL' that cross perpendicularly, and a pixel electrode element P' located at the intersection of the data line DL' and the scan line SL'. The pixel electrode element P' includes a main pixel electrode M' and a sub-pixel electrode S'. In order to increase the aperture ratio of the display panel, the pixel unit omits a black matrix (Data Black Matrix Less, DBL) on the data line DL' and omits the design of the common electrode C' as a shielding metal, but changes the wiring of the sub-pixel electrode S' to be a shielding metal, thereby reducing the parasitic capacitance between the main pixel electrode M' and the data line DL'. However, the problem with such a pixel unit design is that the sub-pixel electrode S' is in a floating state most of the time and has no potential control, so its shielding effect is very limited, and the parasitic capacitance between the main pixel electrode M' and the data line DL' is too large, resulting in more serious color cross talk and vertical cross talk problems. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a pixel unit of a display panel, a lower substrate of a display panel, and a display panel, which solves the technical problem that the parasitic capacitance between a main pixel electrode and a data line in a pixel unit in a display panel in the prior art is too large, resulting in serious color cross talk and vertical cross talk. [Means for solving the problem]

[0005] In one aspect, an embodiment of the present application provides a pixel unit of the display panel, comprising: A scanning signal line; a data signal line perpendicularly intersecting the scanning signal line, and an opening region is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel with the scanning signal line, the common signal line being formed with a common electrode; a pixel electrode disposed within the opening region; a transparent shielding electrode element connected to the common signal line and extending from the common signal line into the opening region, the transparent shielding electrode element having an orthogonal projection in a plane in which the common signal line is located at least partially overlapping with the common signal line.

[0006] In some embodiments of the present application, the transparent shielding electrode element is U-shaped and includes a first shielding section and two second shielding sections, the two second shielding sections extend from the location of the common signal line into the opening area, one end of each of the second shielding sections is connected to the common signal line and the other end of each of the second shielding sections is connected to one end of the first shielding section, and the orthogonal projection of each of the second shielding sections in the plane in which the common signal line is located at least partially overlaps with the common signal line pole.

[0007] In some embodiments of the present application, the transparent shielding electrode element includes two shielding strips, the two shielding strips are spaced apart from each other and extend into the opening area from the common signal line, one end of each shielding strip is connected to the common signal line, and the orthogonal projection of each shielding strip in the plane in which the common signal line is located at least partially overlaps with the common signal line, and the two shielding strips may be parallel to each other.

[0008] In some embodiments of the present application, the transparent shield electrode element and the common signal line are mutually independent and separate elements, and are in contact with each other and connected to each other.

[0009] In some embodiments of the present application, the material of the transparent shield electrode element is indium tin oxide.

[0010] In another aspect, an embodiment of the present application provides a lower substrate of the display panel, comprising a glass substrate; a first metal layer, a second metal layer, and a first transparent conductive layer, which are indirectly or directly stacked on the glass substrate in this order; and the lower substrate further comprises: A scanning signal line patterned using the first metal layer; a data signal line that is patterned by the second metal layer and perpendicularly intersects with the scanning signal line, and an opening area is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel to the scanning signal line in the same layer, the common signal line having a common electrode formed thereon; a pixel electrode that is patterned by the first transparent conductive layer and disposed within the opening region; a transparent shielding electrode element connected to the common signal line and extending from the common signal line into the opening region, the transparent shielding electrode element having an orthogonal projection in a plane in which the common signal line is located at least partially overlapping with the common signal line.

[0011] In some embodiments of the present application, the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line, thereby providing a shielding effect and reducing parasitic capacitance between the pixel electrode and the data signal line.

[0012] In some embodiments of the present application, the transparent shielding electrode element includes two shielding strips that are spaced apart from each other, and each of the shielding strips is connected to the common signal line in a contact manner or an integrally molded manner, and the orthogonal projection of each of the shielding strips on the plane in which the common signal line is located overlaps with the common signal line, and the two shielding strips may be parallel to each other.

[0013] In some embodiments of the present application, the lower substrate further includes a second transparent conductive layer, the second transparent conductive layer is disposed between the glass substrate and the first metal layer, and the transparent shielding electrode element is patterned by the second transparent conductive layer formed thereon.

[0014] In some embodiments of the present application, the transparent shielding electrode element and the common signal line are independent elements, and are in contact with each other and connected to each other; And the material of the transparent shield electrode element is indium tin oxide.

[0015] In some embodiments of the present application, the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line.

[0016] In some embodiments of the present application, the transparent shielding electrode element includes two shielding strips spaced apart from each other, and each of the shielding strips is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the shielding strips in a plane in which the common signal line is located overlaps with the common signal line.

[0017] In some embodiments of the present application, the lower substrate further includes a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer.

[0018] In yet another aspect, the present invention provides a display panel, comprising: a lower substrate; an upper substrate disposed opposite to the lower substrate; and a liquid crystal layer disposed between the upper substrate and the lower substrate, the lower substrate comprising: A glass substrate, a first metal layer, a second metal layer, and a first transparent conductive layer which are indirectly or directly stacked on the glass substrate in this order; A scanning signal line patterned using the first metal layer; a data signal line that is patterned by the second metal layer and perpendicularly intersects with the scanning signal line, and an opening area is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel to the scanning signal line in the same layer, the common signal line having a common electrode formed thereon; a pixel electrode that is patterned by the first transparent conductive layer and disposed within the opening region; a transparent shielding electrode element connected to the common signal line and extending from the common signal line into the opening region, the transparent shielding electrode element having an orthogonal projection on a plane in which the common signal line is located at least partially overlapping with the common signal line to provide a shielding effect and to reduce parasitic capacitance between the pixel electrode and the data signal line.

[0019] In some embodiments of the present application, the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line.

[0020] In some embodiments of the present application, the transparent shielding electrode element includes two shielding strips spaced apart from each other, and each of the shielding strips is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the shielding strips in a plane in which the common signal line is located overlaps with the common signal line.

[0021] In some embodiments of the present application, the display panel further includes a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer. In some embodiments of the present application, the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally-molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line; the transparent shielding electrode element includes two shielding strips spaced apart from each other, each of the shielding strips is connected to the common signal line in a contact manner or an integrally-molded manner, and an orthogonal projection of each of the shielding strips in a plane in which the common signal line is located overlaps with the common signal line; and the target display panel further includes a second transparent conductive layer, the second transparent conductive layer is disposed between the glass substrate and the first metal layer, and the transparent shielding electrode element is patterned by the second transparent conductive layer.

[0022] In some embodiments of the present application, the transparent shield electrode element and the common signal line are independent elements, and are in contact with each other and connected to each other.

[0023] In some embodiments of the present application, the material of the transparent shield electrode element is indium tin oxide. Effect of the Invention

[0024] The present application has at least the following advantages:

[0025] The pixel unit of the display panel, the lower substrate of the display panel, and the display panel provided by the present application are provided with a transparent shielding electrode element connected to a common signal line and extending into the opening region, and the orthogonal projection of the transparent shielding electrode element in the plane where the common signal line is located at least partially overlaps with the common signal line, thereby extending the common signal line to provide a shielding effect, thereby reducing the parasitic capacitance between the pixel electrode and the data line, and solving the technical problem that the parasitic capacitance between the main pixel electrode and the data line in the pixel unit in the display panel in the prior art is too large, resulting in serious color cross talk and vertical cross talk. In addition, since the transparent shielding electrode element and the pixel electrode in the present application are both transparent conductive electrodes, the transparent shielding electrode element extending into the opening region does not reduce the aperture ratio and transmittance of the pixel unit, thereby avoiding the technical problem that the aperture ratio and transmittance are reduced due to the shielding metal located in the opening region of the pixel unit in the prior art.

[0026] In order to more clearly describe the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments, and it is obvious that the drawings in the following description are merely some embodiments of the present application, and those skilled in the art can further obtain other drawings based on these drawings without the need for inventive efforts. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a schematic plan view of a pixel unit of a display panel according to the prior art; [Diagram 2] FIG. 2 is a perspective exploded schematic diagram of a display panel provided in an embodiment of the present application; [Figure 3a] FIG. 2 is a schematic plan view of a pixel unit of a display panel provided by an embodiment of the present application; [Figure 3b] FIG. 2 is a schematic plan view of a pixel unit of a display panel provided by an embodiment of the present application, in which the pixel electrode is omitted and the aperture area is shown. [Figure 4] FIG. 2 is a schematic plan view illustrating a common signal line in a first metal layer in a pixel unit of a display panel provided according to an embodiment of the present application partially overlapping a transparent shielding electrode element. [Diagram 5] FIG. 2 is a schematic plan view of a pixel unit of a display panel provided according to another embodiment of the present application; [Figure 6] FIG. 2 is a schematic plan view illustrating a common signal line in a first metal layer in a pixel unit of a display panel provided according to another embodiment of the present application partially overlapping a transparent shielding electrode element. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] The technical solutions of the embodiments of the present application are described below in a clear and complete manner in conjunction with the drawings of the embodiments of the present application. It is obvious that the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments that a person skilled in the art can obtain under the premise that no inventive work is required, all of them belong to the protection scope of the present application.

[0029] It should also be understood that the specific embodiments described herein are only used to explain and interpret the present application, and are not used to limit the present application. In this application, unless otherwise stated, directional terms used, such as "upper" and "lower", generally refer to the upper and lower sides of the device under actual use or operating conditions, specifically in the direction of the paper in the drawings, and "inner" and "outer" refer to the contour of the device.

[0030] The embodiments of the present application provide a pixel unit of a display panel, a lower substrate of a display panel, and a display panel, which solves the technical problem that the parasitic capacitance between a main pixel electrode in a pixel unit of a display panel and a data signal line in the prior art is too large, resulting in serious color cross talk and vertical cross talk.

[0031] 2, 3a and 3b, the pixel unit 3 of the display panel provided by the embodiment of the present application includes a scanning signal line SL, a data signal line DL, a common signal line CL, a pixel electrode P and a transparent shielding electrode element 20.

[0032] A gate G is formed on the scanning signal line SL.

[0033] The data signal lines DL perpendicularly intersect with the scanning signal lines SL, and an opening area OA is formed at the intersection of the scanning signal lines SL and the data signal lines DL, as shown in FIG. 3b.

[0034] The common signal lines CL are disposed in parallel to the scanning signal lines SL, and a common electrode C is formed on the common signal lines CL.

[0035] The pixel electrode P is disposed in the opening area OA, and may include a main pixel electrode portion M and a sub-pixel electrode portion S.

[0036] The transparent shielding electrode elements 20 are connected to the common signal lines CL, extend from the common signal lines CL into the opening area OA, and the orthogonal projection of the transparent shielding electrode elements 20 on the plane on which the common signal lines CL are located at least partially overlaps with the common signal lines CL. Specifically, some of the common signal lines CL are covered on some of the transparent shielding electrode elements 20, or some of the transparent shielding electrode elements 20 are covered on some of the common signal lines CL.

[0037] In detail, the transparent shielding electrode element 20 is used as a shielding electrode to extend the shielding effect of the common signal line CL, and further reduces the parasitic capacitance between the main pixel electrode portion M and the data signal line DL, and further avoids the problems of color cross talk and vertical cross talk. In a preferred embodiment of the present application, the material of the transparent shielding electrode element 20 may be indium tin oxide (ITO).

[0038] 3a, 3b and 4, in one embodiment of the present application, the transparent shielding electrode element 20 is U-shaped and includes a first shielding section 21 and two second shielding sections 22, the two second shielding sections 22 extend from the common electrode C into the opening area OA, one end of each of the second shielding sections 22 is connected to the common signal line CL, and the other end of each of the second shielding sections 22 is connected to one end of the first shielding section 21, and the orthogonal projection of each of the second shielding sections 22 on the plane where the common signal line CL is located at least partially overlaps with the common signal line CL. In addition, the two second shielding sections 22 are respectively adjacent to the data signal line DL of the pixel unit and the data signal line DL of an adjacent pixel unit further included in the display panel, and the two second shielding sections 22 may be respectively located on both sides of the main pixel electrode portion M of the pixel electrode P, thereby further reducing the parasitic capacitance between the main pixel electrode portion M and the data signal line DL.

[0039] 5 and 6, in another embodiment of the present application, the transparent shielding electrode element 20a includes two shielding strips 23, the two shielding strips 23 are spaced apart from each other and extend from the common signal line CL into the opening area OA, one end of each of the shielding strips 23 is connected to the common signal line CL, and the orthogonal projection of each of the shielding strips 23 on the plane where the common signal line CL is located at least partially overlaps with the common signal line CL. In addition, the two shielding strips 23 are respectively adjacent to the data signal line DL of the pixel unit and the data signal line DL of an adjacent pixel unit further included in the display panel, and the two shielding strips 23 may be respectively located on both sides of the main pixel electrode portion M of the pixel electrode P, thereby further reducing the parasitic capacitance between the main pixel electrode portion M and the data signal line DL.

[0040] In some embodiments of the present application, the transparent shielding electrode elements 20 and the common signal line CL are located in different material layers, are independent and separate elements, and are in contact with each other to be connected to each other; or, in some embodiments of the present application, the transparent shielding electrode elements 20 and the common signal line CL are both disposed on the surface of the glass substrate 10, and some of the common electrodes C are covered by some of the transparent shielding electrode elements 20, or some of the transparent shielding electrode elements 20 are covered by some of the common electrodes C.

[0041] Referring to Figures 2, 3a and 3b, an embodiment of the present application provides a lower substrate 1 of the display panel, which includes a glass substrate 10, a first metal layer M1, a second metal layer M2 and a first transparent conductive layer 30 which are indirectly or directly stacked on the glass substrate 10 in order, where the lower substrate 1 further includes a scanning signal line SL, a data signal line DL, a common signal line CL, a pixel electrode P and a transparent shielding electrode element 20.

[0042] The scanning signal lines SL are patterned from the first metal layer M1, and gates G are formed on the scanning signal lines SL.

[0043] The data signal lines DL are patterned by the second metal layer M2 and perpendicularly intersect with the scanning signal lines SL, where an opening area OA is formed at the intersection of the scanning signal lines SL and the data signal lines DL.

[0044] The common signal lines CL are disposed in parallel to the scanning signal lines SL in the same layer, and a common electrode C is formed on the common signal lines CL.

[0045] The pixel electrode P is patterned by the first transparent conductive layer 30, disposed in the opening region, and may include a main pixel electrode portion M and a sub-pixel electrode portion S.

[0046] The transparent shielding electrode element 20 is connected to the common signal line CL and extends from the common signal line CL into the opening region, and the orthogonal projection of the transparent shielding electrode element 20 on the plane in which the common signal line CL is located at least partially overlaps with the common signal line CL.

[0047] In detail, the transparent shielding electrode element 20 is used as a shielding electrode to shield the common signal line CL, and further reduces the parasitic capacitance between the main pixel electrode portion M and the data signal line DL, and further avoids the problems of color cross talk and vertical cross talk. In a preferred embodiment of the present application, the material of the transparent shielding electrode element 20 may be indium tin oxide (ITO).

[0048] 3a, 3b and 4, in one embodiment of the present application, the transparent shielding electrode element 20 is U-shaped and includes a first shielding section 21 and two second shielding sections 22, the two second shielding sections 22 extend from the location of the common signal line CL into the opening area, one end of each of the second shielding sections 22 is connected to the common signal line CL and the other end of each of the second shielding sections 22 is connected to one end of the first shielding section 21, and the orthogonal projection of each of the second shielding sections 22 on the plane where the common signal line CL is located at least partially overlaps with the common signal line CL. In addition, the two second shielding sections 22 are respectively adjacent to the data signal line DL of the pixel unit and the data signal line DL of an adjacent pixel unit further included in the display panel, and the two second shielding sections 22 may be respectively located on both sides of the main pixel electrode portion M of the pixel electrode P, thereby further reducing the parasitic capacitance between the main pixel electrode portion M and the data signal line DL.

[0049] In detail, the lower substrate 1 of the display panel provided according to the embodiment of the present application further includes an insulating layer GI, a semiconductor layer (not shown), a first passivation layer PV1, a color photoresist layer CF, and a second passivation layer PV2. The glass substrate 10, the first metal layer M1, the insulating layer GI, the semiconductor layer, the second metal layer M2, the first passivation layer PV1, the color photoresist layer CF, the second passivation layer PV2, and the first transparent conductive layer 30 are sequentially stacked to form the lower substrate 1.

[0050] 5 and 6, in another embodiment of the present application, the transparent shielding electrode element 20 includes two shielding strips 23, the two shielding strips 23 are spaced apart from each other and extend from the common signal line CL into the opening area, one end of each shielding strip 23 is connected to the common signal line CL, and the orthogonal projection of each shielding strip 23 on the plane where the common signal line CL is located at least partially overlaps with the common signal line CL. In addition, the two shielding strips 23 are respectively adjacent to the data signal line DL of the pixel unit and the data signal line DL of an adjacent pixel unit further included in the display panel, and the two shielding strips 23 may be respectively located on both sides of the main pixel electrode portion M of the pixel electrode P, thereby further reducing the parasitic capacitance between the main pixel electrode portion M and the data signal line DL.

[0051] In some embodiments of the present application, the transparent shielding electrode element 20 is patterned by a second transparent conductive layer. Specifically, the second transparent conductive layer is disposed between the glass substrate 10 and the first metal layer M1. The transparent shielding electrode element 20 is patterned by the second transparent conductive layer by a photolithography method.

[0052] In still another aspect, an embodiment of the present application provides a display panel as described above, comprising a lower substrate 1 in the above embodiment, an upper substrate 2 disposed opposite to the lower substrate 1, and a liquid crystal layer LC disposed between the upper substrate 2 and the lower substrate 1. Specifically, the upper substrate 2 further comprises a black matrix BM, which is used to define the aperture area OA. The upper substrate 2 further comprises an upper substrate common electrode CC and an upper cover CG, as shown in FIG. 2.

[0053] The following comparison table (Table 1) compares the parasitic capacitance in the pixel unit before and after the addition of the transparent shielding electrode element 20. As can be seen from the comparison table, after the U-shaped transparent electrode is added, the parasitic capacitance of the main pixel electrode portion M is reduced to 12% of the original, and the parasitic capacitance / total capacitance is reduced from 1.24% to 0.15%, indicating that the transparent shielding electrode element 20 has the effect of reducing the parasitic capacitance. If the area of ​​the transparent shielding electrode element 20 is sufficiently increased, the parasitic capacitance / total capacitance will be reduced.

[0054] [Table 1]

[0055] The present application has at least the following advantages:

[0056] The pixel unit of the display panel, the lower substrate 1 of the display panel, and the display panel provided by the present application are provided with a transparent shielding electrode element 20 connected to a common electrode C and extending into the opening region, and the orthogonal projection of the transparent shielding electrode element 20 in the plane where the common signal line CL is located at least partially overlaps with the common electrode C, thereby extending the shielding effect provided by the common signal line CL, thereby reducing the parasitic capacitance between the pixel electrode P and the data signal line DL, and solving the technical problem in the prior art that the parasitic capacitance between the main pixel electrode P and the data signal line DL in the pixel unit in the display panel is too large, which leads to serious color crosstalk and vertical crosstalk. In addition, the transparent shielding electrode element 20 and the pixel electrode P of the present application are both transparent conductive electrodes, so that the transparent shielding electrode element 20 extending into the opening region does not reduce the aperture ratio and transmittance of the pixel unit, thereby avoiding the technical problem in the prior art that the aperture ratio and transmittance are reduced due to the shielding metal located in the opening region of the pixel unit.

[0057] In this text, the principles and embodiments of the present application are discussed by applying specific examples. The description of the above examples is only intended to facilitate understanding of the method of the present application and its core ideas. At the same time, those skilled in the art can make any changes to the specific embodiments and application scope in accordance with the ideas of the present application. As such, it should be understood that the contents of this specification are not limitations on the present application. [Explanation of symbols]

[0058] 1 Bottom Board 2 Top Board 3 Pixel Unit 10 Glass substrate 20 U-shaped transparent shield electrode element 20 Transparent shield electrode element 20a Transparent shielding electrode element 21 1st Shielding Section 22 Second Shielding Section 23 Shielding Strip 30 First transparent conductive layer

Claims

1. A pixel unit of a display panel, A scanning signal line; a data signal line perpendicularly intersecting the scanning signal line, and an opening region is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel with the scanning signal line, the common signal line being formed with a common electrode; a pixel electrode disposed within the opening region; a transparent shielding electrode element extending from the common signal line into the opening region, the transparent shielding electrode element having an orthogonal projection on a plane in which the common signal line is located at least partially overlapping the common signal line and being connected to the common signal line by the overlapping portion; a pixel unit of a display panel, wherein the transparent shielding electrode elements located on both sides of the main pixel electrode portion of the pixel electrode are adjacent to the sides of the data signal lines on both sides of the pixel unit that are closer to the main pixel electrode portion of the pixel electrode in a direction along the common signal line.

2. 2. The pixel unit of claim 1, wherein the transparent shielding electrode element is U-shaped and includes a first shielding section and two second shielding sections, the two second shielding sections extend from the location of the common signal line into the opening area, one end of each of the second shielding sections is connected to the common signal line and the other end of each of the second shielding sections is connected to one end of the first shielding section, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located at least partially overlaps with the common signal line.

3. 2. The pixel unit of the display panel of claim 1, wherein the transparent shielding electrode element includes two shielding strips, the two shielding strips are spaced apart from each other and extend into the opening area from the location of the common signal line, one end of each of the shielding strips is connected to the common signal line, and an orthogonal projection of each of the shielding strips in a plane in which the common signal line is located at least partially overlaps with the common signal line.

4. 2. The pixel unit of claim 1, wherein the transparent shielding electrode element and the common signal line are independent elements and are in contact with each other to be connected to each other.

5. 2. The pixel unit of claim 1, wherein the material of said transparent shield electrode element is indium tin oxide.

6. A lower substrate of a display panel, comprising: a glass substrate; a first metal layer, a second metal layer, and a first transparent conductive layer, which are indirectly or directly stacked on the glass substrate in this order; and the lower substrate further comprises: a scanning signal line patterned using the first metal layer; a data signal line that is patterned by the second metal layer and perpendicularly intersects with the scanning signal line, and an opening region is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel to the scanning signal line in the same layer, the common signal line having a common electrode formed thereon; a pixel electrode that is patterned by the first transparent conductive layer and disposed within the opening region; a transparent shielding electrode element extending from the common signal line into the opening region, the orthogonal projection of the transparent shielding electrode element on a plane in which the common signal line is located at least partially overlapping the common signal line, the transparent shielding electrode element being connected to the common signal line by the overlapping portion to provide a shielding effect and to reduce a parasitic capacitance between the pixel electrode and the data signal line; the transparent shielding electrode elements located on both sides of the main pixel electrode portion of the pixel electrode are adjacent to the sides of the data signal lines on both sides of the pixel unit that are closer to the main pixel electrode portion of the pixel electrode in a direction along the common signal line, respectively;

7. 7. The lower substrate of the display panel of claim 6, wherein the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line.

8. 7. The lower substrate of the display panel according to claim 6, wherein the transparent shielding electrode element includes two shielding strips spaced apart from each other, and each of the shielding strips is connected to the common signal line by a contact manner or an integral molding manner, and an orthogonal projection of each of the shielding strips in a plane on which the common signal line is located overlaps with the common signal line.

9. 7. The lower substrate of the display panel of claim 6, further comprising a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer.

10. The transparent shielding electrode element and the common signal line are independent elements, and are in contact with each other and connected to each other; 7. The lower substrate of the display panel as claimed in claim 6, wherein the material of said transparent shield electrode element is indium tin oxide.

11. 11. The lower substrate of the display panel of claim 10, wherein the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane on which the common signal line is located overlaps with the common signal line.

12. 11. The lower substrate of the display panel according to claim 10, wherein the transparent shielding electrode element includes two shielding strips spaced apart from each other, and each of the shielding strips is connected to the common signal line by a contact manner or an integral molding manner, and an orthogonal projection of each of the shielding strips in a plane on which the common signal line is located overlaps with the common signal line.

13. 11. The lower substrate of the display panel of claim 10, further comprising a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer.

14. A display panel comprising: a lower substrate; an upper substrate disposed opposite to the lower substrate; and a liquid crystal layer disposed between the upper substrate and the lower substrate; The lower substrate is A glass substrate; a first metal layer, a second metal layer, and a first transparent conductive layer, which are indirectly or directly stacked on the glass substrate in this order; a scanning signal line patterned using the first metal layer; a data signal line that is patterned by the second metal layer and perpendicularly intersects with the scanning signal line, and an opening region is formed at an intersection of the scanning signal line and the data signal line; a common signal line disposed in parallel to the scanning signal line in the same layer, the common signal line having a common electrode formed thereon; a pixel electrode that is patterned by the first transparent conductive layer and disposed within the opening region; a transparent shielding electrode element extending from the common signal line into the opening region, the orthogonal projection of the transparent shielding electrode element on a plane on which the common signal line is located at least partially overlapping the common signal line, the transparent shielding electrode element being connected to the common signal line by the overlapping portion to provide a shielding effect and to reduce a parasitic capacitance between the pixel electrode and the data signal line. a transparent shielding electrode element located on both sides of a main pixel electrode portion of the pixel electrode is adjacent to a side of the data signal line on both sides of the pixel unit that is closer to the main pixel electrode portion of the pixel electrode in a direction along the common signal line, the transparent shielding electrode element being located on both sides of the pixel unit that is closer to the main pixel electrode portion of the pixel electrode in a direction along the common signal line.

15. 15. The display panel of claim 14, wherein the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections in a plane in which the common signal line is located overlaps with the common signal line.

16. 15. The display panel of claim 14, wherein the transparent shielding electrode element includes two shielding strips spaced apart from each other, and each of the shielding strips is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the shielding strips in a plane in which the common signal line is located overlaps with the common signal line.

17. 15. The display panel of claim 14, further comprising a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer.

18. the transparent shielding electrode element includes a first shielding section and two second shielding sections extending from the first shielding section and spaced apart from each other, each of the second shielding sections is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the second shielding sections on a plane in which the common signal line is located overlaps with the common signal line; The transparent shielding electrode element includes two shielding strips that are spaced apart from each other, and each of the shielding strips is connected to the common signal line in a contact manner or an integrally molded manner, and an orthogonal projection of each of the shielding strips on a plane on which the common signal line is located overlaps with the common signal line; 15. The display panel of claim 14, further comprising a second transparent conductive layer, the second transparent conductive layer being disposed between the glass substrate and the first metal layer, and the transparent shielding electrode elements being patterned by the second transparent conductive layer.

19. 15. The display panel according to claim 14, wherein the transparent shielding electrode element and the common signal line are independent elements, and are in contact with each other to be connected to each other.

20. 15. The display panel of claim 14, wherein the material of the transparent shield electrode element is indium tin oxide.

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